Question

I have the following json returned string:

[{"status":2,"id":"-1","content":"User has entered wrong input","time":1346765646202}]

(as you can see the result is in an array that contains a single object).

How can I extract the value of status and content without Enumeration?

For now I created a dictionary and run on it with enumeration, but I don’t like the solution:

NSData *jsonData = [returnString dataUsingEncoding:NSUTF8StringEncoding];
NSDictionary *json = [NSJSONSerialization JSONObjectWithData:jsonData options:0 error:&error];

Answer 1

Because the whole thing is wrapped in [], it will deserialize into an NSArray (of size 1) (not an NSDictionary as your code implies). The element in that array will be an NSDictionary ({}). You can get that dictionary with objectAtIndex:0 and skip your enumeration:

NSData *jsonData = [returnString dataUsingEncoding:NSUTF8StringEncoding];
NSArray *json = [NSJSONSerialization JSONObjectWithData:jsonData options:0 error:&error];
NSDictionary *response = [json objectAtIndex:0];
NSNumber *status = [response objectForKey:@"status"];
NSString *content = [response objectForKey:@"content"];